<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <link rel="stylesheet" href="../styles/css.css">
    <script src="../javascript/tool.js"></script>
    <script src="../javascript/base.js"></script>
    <script src="../javascript/getClass.js"></script>
</head>
<body>
<div id="box">box</div>
<div id="pox">box</div>
<input type="button" value="按钮1" id="btn">
<input type="button" value="按钮2" id="btn2">
<div id="aa"></div>
</body>
</html>